4周搞定2000+托福核心词
undergo = under(在…下) + go(走) = 在下面走过→经历
underth = under(在…下) + th(表名词) = (长在大树下面的)灌木
林下叶层
understory
常考释义
However, loggers concentrated on removing those big, old, valuable, fire-resistant ponderosa pines, while fire suppression for decades let the understory fill up with Douglas fir saplings that would in turn become valuable when full-grown.
但是，伐木工人正考虑砍除这些又大又老，很有价值又耐火的黄松树，因为多年来的灭火政策使得下层生长的道格拉斯冷杉幼树一旦生长成熟也可以变得非常有价值。
来源于：阅读OFFICIAL39 P3n. 林下叶层；下层植被
These incredibly high-pitched and fast-paced calls enable the bats to track bugs and other prey in the dense rainforest understory.
这些难以置信的高速和快节奏的声波能够使它在茂密的热带雨林下追踪昆虫和其他猎物。
However, loggers concentrated on removing those big, old, valuable, fire-resistant ponderosa pines, while fire suppression for decades let the understory fill up with Douglas fir saplings that would in turn become valuable when full-grown.
但是，伐木工人正考虑砍除这些又大又老，很有价值又耐火的黄松树，因为多年来的灭火政策使得下层生长的道格拉斯冷杉幼树一旦生长成熟也可以变得非常有价值。
来源于：阅读OFFICIAL39 P3As a result, many natural ponderosa pine forests have a parklike appearance, with low fuel loads, big trees spaced apart, and a relatively clear understory.
因此许多自然生长的黄松林有点像公园，燃料量很少，树与树之间的间距大，下层植物比较少。
来源于：阅读OFFICIAL39 P3['ʌndɚ,stɔri]
基本释义 n. 林下叶层
常考释义 n. 林下叶层
These incredibly high-pitched and fast-paced calls enable the bats to track bugs and other prey in the dense rainforest understory.
这些难以置信的高速和快节奏的声波能够使它在茂密的热带雨林下追踪昆虫和其他猎物。
undergo vt. 经受；经历
under在...下+go走 =在下面走过→经历
undergrowth n.下木层；林下灌草层<英>
under在...下+grow生长+th名词 =(长在大树下面的)灌木
underlie v. 构成…的基础
under在...下+lie躺;位于 =位于…之下
anthocyanin 花色素苷
anth花+o+cyanin花青 = 花青素
conifer n.针叶树
cone锥形物+fer结果实 = 结圆锥形果实的→针叶树
xerophyte n. ［生态］旱生植物
xero干旱+phyte植物 = 旱生植物
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